WEBVTT New cell-phone video shows the moments after a Des Moines house burst into flames last night, burning a grandmother and sending her to the hospital. And there are still plenty of questions over just what happened on 37th Street. New at 9 -- KCCI's Chris Gothner is live at the scene with what neighbors are saying. Well you can see how charred the front of this house is -- crime scene tape is still up tonight. This house is a total loss. Neighbors want to know what caused the inferno. <VIDEO NATS> New cellphone video obtained by KCCI shows the moments after a house in Des Moines' Drake neighborhood burst into flames Wednesday night. <37;24 THIS WHOLE NEIGHBORHOOD WAS COVERED WITH FIRE TRUCKS POLICE AND AMBULANCES. 37;30> Our cameras were there as rescuers loaded a grandmother in her 80s into an ambulance. They took her to a local hospital with burn injuries. Officials tell us Thursday she was transferred to Iowa City. They say her grandson was taken to the hospital as a precaution -- and quickly released. <41;09 I MEAN WE DON'T HANG OUT WITH THEM VERY OFTEN THEY ALWAYS SEEM NICE. 41;12> Now the question is what caused the fire. Firefighters say they've yet to pin down a cause -- they're investigating jointly with Des Moines police. <41;49 THERE WAS A CRIME SCENE INVESTIGATOR THERE THIS MORNING 41;52> On Thursday, the scene became a magnet for curious drivers, slowing down to catch a glimpse of damage. <40;43 WHENEVER I COME OUTSIDE I SEE A COUPLE OF CARS DRIVING BY CHECKING IT OUT. PEOPLE JUST AREN'T USED TO HAVING A BIG FIRE AROUND HERE I THINK. 40;51> Neighbors are curious too -- they want to know what happened... and hope everyone comes out okay. <37;50 WONDER IF THE PEOPLE ARE ALL RIGHT 37;51> <42;17 I JUST HOPE THEY FIGURE OUT WHAT HAPPENED TO THE HOUSE AND WHY IT WAS SUCH A BIG FIRE LIKE THAT. 42;21> And officials haven't released the names of those involved. They say that may come tomorrow. There's no word on a concrete timeline -- as to when the investigation will be complete. Live in Des Moines, Chris Gothner, KCCI 8 News Iowa's News Leader.